Exposed, Battery Powered, Sensor Activated Optima Plus(R) Model Water Closet Flushometer for floor mounted or wall hung top spud bowls. Sloan(R) Sensor Exposed Flushometer, Single-Flush, Series: 8111, G2 Optima Plus(R) Collection, Water Closet Fixture, Battery Power Source, 1.28 gpf Flush, 1 in IPS Inlet, 1-1/2 in Spud Coupling, 11-1/2 in Rough-In, Diaphragm Valve Design, Connection Location: Top Spud, 22 to 42 in Sensor, 15 to 80 psi Pressure, Semi-Red Brass, Polished Chrome, Domestic